David Kautter

Internal Revenue Service Acting Commissioner David Kautter, shown in February, told a House Oversight Hearing on Tuesday that a number of systems are down at the agency and that they are working to resolve the issue.

FILE- In this Feb. 14, 2018, file photo, Internal Revenue Service Acting Commissioner David Kautter testifies before the Senate Finance Committee on Capitol Hill in Washington on President Donald Trump’s fiscal year 2019 budget proposal. The IRS website to make payments went down on Tuesday, April 17, 2018. Kautter testified during a House Oversight Hearing Tuesday that a number of systems are down at the moment and that they are working to resolve the issue. (AP Photo/Susan Walsh, File)